Oliveira Daniela Fernandes Lobo Molica, Fernandes Ellen Eduarda, Lopes Sergio Lúcio Pereira de Castro, Rode Sigmar de Mello, Oliveira Wagner de, Ertty Ertty, Cardoso Mauricio de Almeida, Tien-Li An, Meloti Fernanda
Institute of Science and Technology - UNESP, Department of Biosciences and Oral Diagnosis, São José dos Campos, SP, Brazil.
Institute of Science and Technology - UNESP, Department of Diagnostics and Surgery, São José dos Campos, SP, Brazil.
Braz Oral Res. 2024 Jul 12;38:e060. doi: 10.1590/1807-3107bor-2024.vol38.0060. eCollection 2024.
This observational, cross-sectional study with retrospective collection was aimed to evaluate the prevalence of morphological changes in mandibular condyles in individuals with class II malocclusion, classified according to different vertical growth patterns (brachyfacial, mesofacial, and dolichofacial), through cone beam computed tomography (CBCT). Seventy CBCT images (140 mandibular condyles) were selected from individuals without orthodontic treatment, of both sexes, aged between 25 and 50 years. No statistically significant differences were found between facial patterns; however, there was a higher relative prevalence of bone changes in dolichofacial individuals with flattening (62%), sclerosis (44%), and subchondral bone cyst (20%). Erosion and osteophytes prevailed in mesofacial (39%), and brachyfacial individuals (32%), respectively. Thus, there was no statistically significant difference in the prevalence of degenerative changes between the vertical skeletal patterns. Flattening was the most prevalent change, whereas subchondral bone cyst was the least prevalent among the three groups studied. The observational design of this study makes it possible to analyze image banks to verify the correlation of morphological changes in the temporomandibular joint in different facial patterns in patients with class II malocclusion. A limitation of the study is that clinical characteristics were not evaluated.
这项采用回顾性收集数据的观察性横断面研究旨在通过锥形束计算机断层扫描（CBCT）评估安氏II类错牙合个体中，根据不同垂直生长模式（短面型、平均面型和长面型）分类的下颌髁突形态变化的患病率。从年龄在25至50岁之间、未经正畸治疗的男女个体中选取了70张CBCT图像（140个下颌髁突）。面部模式之间未发现统计学上的显著差异；然而，长面型个体中出现骨质改变（变平占62%、硬化占44%、软骨下骨囊肿占20%）的相对患病率较高。侵蚀和骨赘分别在平均面型个体（占39%）和短面型个体（占32%）中更为常见。因此，垂直骨骼模式之间退行性改变的患病率没有统计学上的显著差异。变平是最常见的改变，而软骨下骨囊肿是所研究的三组中最不常见的。本研究的观察性设计使得分析图像库以验证安氏II类错牙合患者不同面部模式下颞下颌关节形态变化的相关性成为可能。该研究的一个局限性是未评估临床特征。
